The Transient Tidal Eddy (TTE) project consisted of field and modeling components thatfocused on the tidal eddy motion generation and evolution in the region east of Chatham, MA. The project consisted of a strongly stratified phase in spring 2008 and aweakly stratified phase in winter 2008-09. The winter observation phase of TTE, which spanned3 November 2008 to 3 February 2009, consisted of shipboard CTD and ADCP surveys, mooredADCP time series measurements, CODAR surface current mapping, and the deployment of adrifter.